but that needs to be only after safety is guaranteed when i look at the way that they've done this, the fact that they've buried carriages, that's really wrong and i find that untrustworthy. >> translator: thank you very much, professor. we've been talking to a guest professor. the impact of china's devastating rail accident may prompt some japanese companies to rethink their plans to invest in the country. about 1,000 potential investors from japanese companies attended a financial seminar in tokyo, organized by 11 southern chinese cities on monday. the cities held consultations with participants to try to attract investment, but some attendees voiced concern about china's investment environment, citing saturday's fatal train crash. >> translator: china has rapidly improved its infrastructure, but its operating systems are not good enough. i hope the country improves in this area.